Bearing for power-driven rock-drills.



w. KELLOW.

BEARING FOR POWER www RGCK DMLS.

APPUCATIDN FILED DE()y 30. 1956.

im VEN To f? v @uw www APPLXCATION FILED DEC. 30,1916.

atened 0st. '12H62 2 SHEETS-SHEET 2.

/NVENTO/e I BOSES KELLW, QF PENRHYNDEUDRAETH, WALES.

BELRENG yFR EiiEE-BRIVEN ROCK-BRILLS.

Patented Get., i5, 1918.

@rlgine eppicetion filed. Iuly 111., 1914-. Seriet lts. 850,455 Dvide end-this application flied December SILlv 19116. Serial No. 139,911. l i

11th July, 19A, Serial hurnher 850,455, of

which the present application is e division.

The present invention consists in certain in,

provements in power-drills of this class; particularly in the construction of the thrust-bearing between the turbine er other motor ami the speed-reducing gear, and in the means for lulniceting2T the said hearing and other Working parts.

in 'the accompanying drawings, `Figure l is a part longitudinal section of e turbinedriven rock-drill embodying my present improvements; 2 being u section, and Fig. 3 e fece-view to en enlarged scale of the thrust-hearing before referred to es located between the motor :ind the` speedoeclucing gen1-'through which rotative motion is 'transmitted to the drill.

The machine in its complete form coniprises a turbine-driven rock-drill wherein the drill-roel .5i end e casing B, whereby it is operated, pass through the power-transmission gear, e portion of which seen ut C. The clril1od-cesing B is connected with the lust member of" the epicyelic power-- transmission gear C, and the first member thereof is connected with 'the motor-shaft D; the letter being rotated hy the turbine E. The opposite extremity oie. the drill-rod A projects heyomi the left-hund end of the casing B unil tei-minutes in a piston inclosed in e cylinder; these parts not being shown in the drawing es they form no part of the present invention. To the back of the piston, Water under high pressure is admitted for the purpose of forcing the drill-rod :tor- Ward; the latter being' cupslhle of sliding longitudinally through the casing B, While rotating therewith euri heing rotated thereley. The construction oi the turbine E and the Ineens for applying e jet of higlnpressure Waiter thereto and for conveying the turbine.

Water therefrom :irc described-'in detail in the specification `to my aforesaid flo-pending application', Between the "turbine chamber El enti the chamber which stitutes one of the features of improvement ot the present invention, and serves the.'

double purpose of preserving correct elinement between the turbine E and4 the Vothery 65 rota-ting parte, andA et resisting the longiL tuchnel Athrust incidental to reaction 1n the Referring to ig's.` 2 and '3 which illus# trete the hell-hearing H on en enlarged scale, the sezfies of entifrietion yhalls vare mounted inheii-reces J J1. The opposite extremmes ci tee hell-recefhousing Kv are provided; with 1n" f 1 of the gearbox rowing e ciistence-pieee he F tween them.. "Upon slecienin.' the nut L1 and tigutening the nut L, trie inail-reim? housingDr Tril ci. entire hearing ere shifted. to the lett; enel. Aby .iersiting 'the nuts L1 in the reyr shittefA in the o, esite direction; freinet-- nient of the entire hearing in elongitutiinei 'direction beingI *hereby affected.

'For e'ecting the oiccuietion of the 'inhri cent to the hell-hearing E and to the other writing parte of the entire machine, provi? sions of the :toliowing eheracter mede. The inner. member or ba1l-race, which,

rotates et i high velocity,"has two chases M j nnleti in its suie. This rotating member infw- .f

coniunction with its housing. K acts as s een triE mil pump enti drepis oil from the geen hof; G hy wey of the passage n, seenin Flg. l

below ythe drill-shaft, :uidf-rces it through non, the hearing fis-@ the iizilhcheinher; the oil escaping thenceby uy oi the passage o. seen in the same ligure.

there the rill-shut, enel gains access tothe riuiial passage 01. A The oil passes thence by wav ot two branches p and g; the former space between the clrili-rod-cesing B and the 105- interior of the turbine-shaft l). lpposite the outlet from the oil-duct g, the drill-roci-l eusing B is out with e iine--screw-thread'sv which serves to feed a portion ofthe 'oil toward the left to lubricate the surfaces of. 11:0

` leetiing to the thrust-hearing R et the front v*the drill-rod-ca-sing andof the packing T,

ancla. portion to the right to lubi'icate the internal surface of the motorshaft D. It

may be explained that in the present'design,

.the thread s vis out right-handedly, but it is kiniclosed pa-rtly'within the' extremity of the stuiingboxliner which 'is stationary and Apartly within a'r1ng-which may be seen to tates right-handedly in relation to the drillrodcasing. The thread has thereforel a 'right-hand movement in relation to the -to the support and locking it in adjustcd po# sition.

2. In a bearing the combination of a support, a ball'race housing adpi'zi ably mounted the support, means on oppositeI sides of vthe housing` for axially adjuslinfc` tlnj housing relatively .to the Iaupport' and Jfor locking it in adjuatcd position. Y

3. The combination of a `support. a ball racc housing Slidably mountcd in said support and having; end portions projectingY heyontl thc walls of the Support, locking rings having screw threaded-cngagcl'ncnt n ith tho Said projectingends and bcnring on opposite sides of the support.

Jr. In a ball bearing the combination of means for effecting the circulation of the vlubricant, comprising radial chases foi-mcd in the tace ot' a rotating member of thc ballrace and operating as a centrifugal pump to circulate the lubricant through the said ballbearing' and to other working parts of the machine, substantially as set,- forth.

MOSES KELL( )\V.

IVi tnoases L. SHAW, HENRY H. IVATsoN. 

